import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'

Vue.use(VueRouter)


const router = new VueRouter({
  routes:[
    {path: '/', redirect: '/login'},
    {path: '/login', component: Login},
    {path: '/home', component: Home,
     redirect: '/welcome',
    children:[
      {path: '/welcome', component: Welcome},
      {path: '/users', component: Users},
      {path: '/rights', component: Rights},
      {path: '/roles', component: Roles},
      {path: '/categories', component: Cate},
      {path: '/params', component: Params},
      {path: '/goods', component: List},
      {path: '/goods/add', component: Add},
      {path: '/orders', component: Order},
      {path: '/reports', component: Report}
    ]}
  ]
});


//挂载路由导航守卫
router.beforeEach((to, from, next)=>{
  //to 将要访问哪个路径
  // from 代表从哪个路径跳转过来
  // next 是一个函数，表示放行
  // next() 放行  next('/login') 强制跳转
  if (to.path == '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next();
})

export default router
